Definition: Albinism is an inherited condition present at birth, characterized by a lack of pigment that normally gives color to the skin, hair, and eyes. Many types of albinism exist, all of which involve lack of pigment in varying degrees. The condition, which is found in all races, may be accompanied by eye problems and may lead to skin cancer later in life (The Free Dictionary ). This in other words means having blond to white colored hair, very pale skin, and but often have normal colored eyes. There are 1 in 17,000 people in the United States with some type of albinism. Worldwide, there are 1 in 20,000 people with albinism.
Most people get the type of albinism where they have pale skin, hair and eyes. The less common types of albinism are the ones where you have many complications, such as in Hermansky-Pudlak albinism.
Most people inherit albinism, because it is normally a recessive trait. Some people have mutated genes and therefore do not inherit it, but this is not very common. Oculocutaneous albinism is the most common inherited type.
Albinism also causes many types of vision problems. Some types are:
Nystagmus: regular horizontal back and forth movement of the eyes
Strabismus: muscle imbalance of the eyes, “crossed eyes” (esotropia), “lazy eye” or an eye that deviates out (exotropia)
Photophobia: sensitivity to bright light and glare
People with albinism may be either far-sighted or near-sighted and usually have astigmatism
Foveal hypoplasia: the retina, the surface inside the eye that receives light, does not develop normally before birth and in infancy
Optic nerve misrouting: the nerve signals from the retina to the brain do not follow the usual nerve routes
The iris, the colored area in the center of the eye, has little to no pigment to screen out stray light coming into the eye. (Light normally enters the eye only through the pupil, the dark opening in the center of the iris, but in albinism light can pass through the iris as well.)
Albinism
By Colleen and Shannon
Table of Contents
What is Albinism?
Definition: Albinism is an inherited condition present at birth, characterized by a lack of pigment that normally gives color to the skin, hair, and eyes. Many types of albinism exist, all of which involve lack of pigment in varying degrees. The condition, which is found in all races, may be accompanied by eye problems and may lead to skin cancer later in life (The Free Dictionary ). This in other words means having blond to white colored hair, very pale skin, and but often have normal colored eyes. There are 1 in 17,000 people in the United States with some type of albinism. Worldwide, there are 1 in 20,000 people with albinism.Types of Albinism
There are 4 main types of albinism:Most people get the type of albinism where they have pale skin, hair and eyes. The less common types of albinism are the ones where you have many complications, such as in Hermansky-Pudlak albinism.
http://scrapetv.com/News/News%20Pages/Everyone%20Else/images-2/albino-family.jpg
Genetics Behind Albinism
Most people inherit albinism, because it is normally a recessive trait. Some people have mutated genes and therefore do not inherit it, but this is not very common. Oculocutaneous albinism is the most common inherited type.http://neatorama.cachefly.net/images/2006-07/albino-squirrel-white.jpg
Vision Problems
Albinism also causes many types of vision problems. Some types are:http://warcat139.tripod.com/sitebuildercontent/sitebuilderpictures/albino.jpg
Works Cited
http://www.albinism.org/publications/what_is_albinism.htmlhttp://medical-dictionary.thefreedictionary.com/Albinism+in+humans